9,787 research outputs found
Theory of Rare B Decays
Theoretical aspects of rare decays are reviewed. The focus is on the
relation between short-distance interactions and physical observables. It is
argued that there remain significant uncertainties in the theoretical treatment
of certain important quantities. (Talk presented at the International Symposium
on Vector Boson Interactions, University of California, Los Angeles, February
1-3, 1995)Comment: 12 pages, uses REVTeX with aps.sty, epsf.sty, floats.sty; 10
uuencoded .eps figures include
New Predictions for Charmed and Bottom Baryons
I review the recent proposal that there are new isotriplet heavy baryons with
masses approximately 2380 MeV and 5760 MeV. This prediction follows from the
application of heavy spin-flavor and light symmetries to the observed
charmed and bottom baryon states. It also entails assumptions about the spin
and parity quantum numbers of the observed states which are different than is
commonly supposed. The discovery of such states would imply that the
nonrelativistic constituent quark model is a poor predictor of heavy baryon
spectroscopy. I update the analysis in light of new data which have become
available.Comment: 8 pages, LaTeX, to appear in the Proceedings of the University of
Illinois, Chicago, Quarkonium Workshop, June 13-15, 1996; typo on page 6
correcte
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